DC1546A - Schematic

1
2
E1
4
6
7
C6
0.1uF
50V
3
C13
0.1uF
50V
8
3
+
E6
4
31
50
42
52
2
49
RFBA
ROFSA
CLR
REFB
30
RCOMA
R3
10K
E4
U1
LTC2754AIUKG-16
10
R2
10K
41
1
R1
10K
REF4
REF1
VDD
2
A
U3A
LT1469CS8
V-
RINA
C15
0.1uF
VCC
C7
150pF
1
VCC
39
D3
LED
GREEN
C16
27pF
IOUT1A
IOUT2A
RFLAG
VOSADJA
48
3
6
-
5
+
VOSADJA
47
7
U3B
LT1469CS8
7
E18
REFADJD
REFADJD
22
29
6
-
5
+
VOSADJC
21
GND
19
12
VOSADJD
20
REFADJC
REF2
REFADJD
REF3
U4A
LT1469CS8
-
5
+
7
U4B
LT1469CS8
VCC
REF2
E21
1
5
R6
4.99K
U6
24LC025
9
8
11
7
6
12
5
VCC
A0
WP
A1
SCL
A2
SDA
VSS
1
2
V+
D4
BAT54C
3
4
TP5
VSS
C23
10uF
16V
REF1
REF3
E24
REF3
REF4
E26
2
2
-
3
+
1
E12
OUTC
E14
GND
E15
OUTD
E17
GND
E19
VOSADJA
E20
VOSADJB
E22
VOSADJC
E25
VOSADJD
B
V-
2
VIN
VOUT
6
C24
10uF
16V
6
4
2
5
3
1
5V
EXT.
JP11
6
4
2
0
6
4
2
5V
EXT.
1
2
3
3
4
S1
JP7
VOSADJC
1
2
3
GND
VOSADJC
VCC
5
3
1
M-SPAN
JP10
VOSADJD
1
2
3
GND
EXT.
VOSADJD
VCC
D
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
VCC
5
3
1
JP12
1
JP9
E27
VOSADJB
EXT.
S0
C
VOSADJA
EXT.
JP8
VCC
REF4
5
3
1
Linear Technology Corporation
Customer Notice
5V
1630 McCarthy Blvd.
Milpitas, CA. 95035
Phone (408) 432-1900
Fax (408) 434-0507
Linear Technology Has Made A Best Effort To Design A
Circuit That Meets Customer-Supplied Specifications;
However, It Remains The Customer's Responsibility To
Verify Proper And Reliable Operation In The Actual
Application. Component Substitution And Printed
Circuit Board Layout May Significantly Affect Circuit
Performance Or Reliability. Contact Linear Technology
Applications Engineering For Assistance.
This Circuit Is Proprietary To Linear Technology And
Supplied For Use With Linear Technology Parts.
EXT.
JP13
4
WP
TP6
E23
VCC
U7
LT1236ACS8-5
3
14
REF1
REF3
REF4
10
6
4
2
REF2
7
R5
4.99K
GND
C19
27pF
JP6
VOSADJB
1
2
3
GND
VCC
S2
S1
S2
0
3
8
13
NC
6
4
TP4
C22
0.1uF
EEGND
1
U5A
LT1469CS8
4
REF2
REF1
EESCL
+
150pF
V-
GND
EESDA
-
3
C21
6
R4
4.99K
EEVCC
GND
GND
GND
C20
150pF
2
MISO
TP3
2
SDO
1
SDA/MOSI
TP2
SDI
V+
JP5
VOSADJA
1
2
3
GND
S0
M-SPAN
TP1
CS
SCK/SCL
SCK
OUTB
V-
EXT.
8
1
CS
E9
E11
REFADJB
J1
HD2X7
2
1
U2A
LT1469CS8
7
RFBD
ROFSD
VOSADJD
GND
18
17
REFD
16
23
RFBC
ROFSC
24
REFC
25
RIND
RCOMD
15
RINC
RCOMC
13
28
26
GND
GND
GND
53
9
REFADJA
GND
S0
37
33
IOUT2D
11
S1
V+
5V
+
U5B
LT1469CS8
C
V+
-
3
VOSADJB
46
8
IOUT1D
S2
GND
34
4
35
S1
M-SPAN
REFADJB
S2
S0
JP4
REFADJD
1
EXT.
2
3
32
REFADJC
JP3
REFADJC
1
EXT.
2
3
GND
M-SPAN
IOUT2C
VOSADJC
LDAC
REFADJD
REFADJC
SRO
36
2
C18
27pF
IOUT1C
14
E16
REFADJC
JP2
REFADJB
1
EXT.
2
3
GND
38
SCK
1
REFADJB
VOSADJB
Exposed Pad, Solder Side
8
E13
REFADJB
IOUT2B
SDI
REFADJA
REFADJA
IOUT1B
CS
6
27
REFADJA
JP1
REFADJA
1
EXT.
2
3
GND
40
E10
45
4
5
OUTA
E7
C17
27pF
8
E8
LDAC
1
V+
E5
4
RFLAG
+
-
U2B
LT1469CS8
V-
CLR
5
7
51
C12
0.1uF
50V
43
C11
0.1uF
50V
RINB
2
E3
AMP V-
C10
0.1uF
50V
1
D2
BAT54C
C9
0.1uF
50V
2
ROFSB
C8
10uF
16V
-
RCOMB
A
V+
C14
150pF
6
44
C5
0.1uF
50V
REFA
C4
0.1uF
50V
RFBB
C3
0.1uF
50V
1
2
C2
0.1uF
50V
E2
GND
D
8
NOTES:
C1
10uF
16V
D1
BAT54C
B
5
3
AMP V+
3
V+
5
6
Title
7
www.linear.com
LTC2754AIUKG-16,
Size
Document Number
Date:
Thursday, June 04, 2009
16-Bit Quad Serial Precision
SoftSpan Iout DAC
Rev.
A
Demo Circuit 1546A
Sheet
8
1
of
1
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